TY - JOUR
T1 - EVALUATION of IPAD PRO 2020 LIDAR for ESTIMATING TREE DIAMETERS in URBAN FOREST
AU - Wang, X.
AU - Singh, A.
AU - Pervysheva, Y.
AU - Lamatungga, K. E.
AU - Murtinová, V.
AU - Mukarram, M.
AU - Zhu, Q.
AU - Song, K.
AU - Surový, P.
AU - Mokroš, M.
N1 - Publisher Copyright:
© 2021 X. Wang et al.
PY - 2021/9/3
Y1 - 2021/9/3
N2 - Remote Sensing (RS) techniques are increasingly used in urban tree inventory measurements for their improved accuracy and promptness over the conventional methods. The focus of this study is to evaluate the application of iPad Pro 2020 and its LiDAR sensor for urban trees reconstruction and Diameter at Breast Height (DBH) measurements. Altogether, 101 trees were scanned. We have used individual- and multiple-tree scan modes with different settings (Resolution: 10 mm, 15 mm, 20 mm; Confidence: High, Low). With these methods and settings, we have established 12 combinations. The 3DScannerAPP was used to scan and generate point clouds and to estimate DBH circle-fitting algorithm was used within the DendroCloud software. Among 12 methods, the only method with 10 mm resolution, high confidence, and multiple-tree mode has not achieved a 100% detection rate (97%). For multiple-tree mode, the highest estimation accuracy was 7.52% of relative RMSE, and for single-tree mode, it was 7.27%. Low confidence setting had significantly higher accuracy of DBH estimation than high confidence. Furthermore, single-tree mode had a significantly higher accuracy of DBH estimation than multiple-tree mode. The most efficient combination for DBH estimation of urban trees using 3DScannerAPP within iPad Pro 2020, when time and accuracy is considered, was multiple-tree mode with 15 mm resolution and low confidence.
AB - Remote Sensing (RS) techniques are increasingly used in urban tree inventory measurements for their improved accuracy and promptness over the conventional methods. The focus of this study is to evaluate the application of iPad Pro 2020 and its LiDAR sensor for urban trees reconstruction and Diameter at Breast Height (DBH) measurements. Altogether, 101 trees were scanned. We have used individual- and multiple-tree scan modes with different settings (Resolution: 10 mm, 15 mm, 20 mm; Confidence: High, Low). With these methods and settings, we have established 12 combinations. The 3DScannerAPP was used to scan and generate point clouds and to estimate DBH circle-fitting algorithm was used within the DendroCloud software. Among 12 methods, the only method with 10 mm resolution, high confidence, and multiple-tree mode has not achieved a 100% detection rate (97%). For multiple-tree mode, the highest estimation accuracy was 7.52% of relative RMSE, and for single-tree mode, it was 7.27%. Low confidence setting had significantly higher accuracy of DBH estimation than high confidence. Furthermore, single-tree mode had a significantly higher accuracy of DBH estimation than multiple-tree mode. The most efficient combination for DBH estimation of urban trees using 3DScannerAPP within iPad Pro 2020, when time and accuracy is considered, was multiple-tree mode with 15 mm resolution and low confidence.
KW - Circle fitting
KW - Diameter at Breast Height
KW - LiDAR
KW - Urban Forest
KW - iPad Pro 2020
KW - point cloud
UR - https://www.scopus.com/pages/publications/85120081226
U2 - 10.5194/isprs-annals-VIII-4-W1-2021-105-2021
DO - 10.5194/isprs-annals-VIII-4-W1-2021-105-2021
M3 - 会议文章
AN - SCOPUS:85120081226
SN - 2194-9042
VL - 8
SP - 105
EP - 110
JO - ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
JF - ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
IS - 4/W1-2021
T2 - 6th International Conference on Smart Data and Smart Cities, SDSC 2021
Y2 - 15 September 2021 through 17 September 2021
ER -